InsulationPayback

Dillingham Census Area, AK Insulation Payback

Attic insulation payback for Dillingham Census Area, AK

Dillingham Census Area, Alaska is zone 8 under DOE's climate map (Subarctic), which means about as cold as DOE's climate map gets, anywhere in the US. An uninsulated attic there should be built up to R-60. For an attic around 1,000 square feet, closing the gap from R-2 to R-60 costs around $3,480 and saves an estimated $2,777 a year — payback in roughly 1.3 years. Hard to find a home improvement with a faster payback than this.

Heating vs. cooling in Dillingham Census Area

Nearly all of that is heating savings ($2,777/year) — Dillingham Census Area's cooling load through the ceiling is negligible. Dillingham Census Area beats 99% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 9 counties DOE places in zone 8, Dillingham Census Area ranks 9th. Against Alaska's own average of $2,854/year, Dillingham Census Area runs 3% below that.

The climate data behind this

NOAA's KING SALMON, AK US station, 83.3 miles from Dillingham Census Area, supplies the 10,385 HDD and 3 CDD this estimate runs on. Combined heating and cooling load puts Dillingham Census Area in the 99th percentile of this 3,162-county dataset.

Already have some insulation?

A shallower starting point changes the math: with R-11 already down, only the gap to R-49 needs filling, at roughly $2,280 for an estimated $405/year saved (~5.6-year payback). Topping up the attic pays for itself here.

Next steps for a Dillingham Census Area attic

Get more than one quote before committing. Attic access and any needed air sealing move the price around, and most contractors won't take a job below roughly $600 regardless of size - worth asking upfront given Dillingham Census Area's estimated $2,777/year on the line.

More on how this was built

Nothing here is a guess: the methodology guide names the DOE climate map and NOAA station data behind every number on this page. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.